[K/N][Tests] Migrate framework and objcexport tests

^KT-61259

native/native.tests/testData/framework/objcexport/variance.swift

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+import Foundation
+import Kt
+
+// -------- Tests --------
+
+func testInstantiation() {
+#if NO_GENERICS
+    Invariant()
+    OutVariant()
+    InVariant()
+#else
+    Invariant<VarianceTests>()
+    OutVariant<VarianceTests>()
+    InVariant<VarianceTests>()
+#endif
+}
+
+// -------- Execution of the test --------
+
+class VarianceTests : SimpleTestProvider {
+    override init() {
+        super.init()
+
+        test("TestInstantiation", testInstantiation)
+    }
+}